Looking for the ultimate cocktail shaker for your customers? This is it! It's the perfect combination of a water-tight seal while being easy to open and perfectly weighted. Our weighted/weighted (W/W) Martini shaker is made from high-quality, food-grade stainless steel 304. No weird rust spots and super durable-- We've seen one make 10,000+ drinks! Circle-welded: Look closely at the bottom of the shaker. See that weld? We had our factory weld it all the way around (not just in three tiny spots like the other guys). That weight isn't going fall off! Perfectly paired & cross-compatible: All of our cocktail shaker cups are compatible with each other, meaning they nest perfectly for storage and seal perfectly in service. Seals tight, opens right: With a tight seal that opens when you're ready, you can make sure your drinks are shaken, not spilled. Discover the best Boston shaker on the market!